Water is necessary for carrying nutrients to your cells, flushing bacteria from your system, preventing dehydration, and replacing fluids lost from sweating, but you may not need to drink as much as you thought.
Stephen R. Daniels. pediatrician. No. You shouldn't give your newborn water or sugar water. And if you're feeding powdered or concentrated formula to your baby, never dilute it with more than the amount of water called for on the label. Your infant will get all the necessary hydration from breast milk or formula.
Since you drink plenty of water every day, you may have been wondering: does your baby need water too? Your baby doesn't actually need any water until 6 months of age. The reason: Your baby is ACTUALLY already getting water because it's a natural component of breast milk, and is mixed in formula-filled bottles. Once your baby is 6 months of age, it's important for them to start drinking water, because it's a key source of fluoride.